Dilophosaurus, meaning "two-crested lizard", was a theropod dinosaur from the Early Jurassic Period (Pliensbachian stage). It was first described 1954, but it did not recieve its current genus name until years later. It is one of the earliest known theropods, and one of the least understood as well. It was discovered by Sam Welles in the summer of 1942 and brought to Berkeley for cleaning and...

The Norway Lemming or Norwegian Lemming (Lemmus lemmus), is a common species of lemming found in northern Scandinavia and adjacent areas of Russia. It is the only vertebrate species endemic to the region. The Norway lemming dwells in tundra and fells, and prefers to live near water. Adults feed primarily on sedges, grasses and moss. They are active at both day and night, alternating naps with...

Word of the Day

pawl

A pivoted catch designed to fall into a notch on a ratchet wheel so as to allow movement in only one direction (e.g. on a windlass or in a clock mechanism), or alternatively to move the wheel in one direction.